Asked by ruth

What happens when chlorine forms an ion?
Responses

It gains an electron and has an octet in the lowest energy level.

It gains an electron and has an octet in the lowest energy level.

It loses an electron and has an octet in the next-lowest energy level.

It loses an electron and has an octet in the next-lowest energy level.

It loses an electron and has an octet in its innermost shell.

It loses an electron and has an octet in its innermost shell.

It gains an electron and has an octet in its outer shell.

All Answers 1

Answered by GPT-5 mini AI
Correct answer: "It gains an electron and has an octet in its outer shell."

Explanation: Neutral chlorine (Z = 17) has electron configuration 2,8,7. By gaining one electron it becomes Cl− with configuration 2,8,8, achieving a full octet in its outermost shell.